//package com.java2007.filters;
//
//import javax.servlet.*;
//import javax.servlet.annotation.WebFilter;
//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
//import javax.servlet.http.HttpSession;
//import java.io.IOException;
//
//@WebFilter("/*")
//public class LoginFilter implements Filter {
//    @Override
//    public void destroy() {
//    }
//
//    @Override
//    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
//        HttpServletRequest request = (HttpServletRequest) req;
//        HttpServletResponse response = (HttpServletResponse) resp;
//
//        //放行文件
//        String uri =request.getRequestURI();
//        System.out.println(uri);
//
//
//        HttpSession session = request.getSession();
//        Object admin = session.getAttribute("admin");
//        if (admin == null){
//            response.sendRedirect(request.getContextPath()+"/index.jsp");
//            return;
//        }
//        chain.doFilter(request,response);
//    }
//
//    @Override
//    public void init(FilterConfig config) throws ServletException {
//
//    }
//
//}
